The present paper deals with the investigation on the argentometric and bromatometric methods for the determination of water soluble potassium with TPB (tetraphenylboron) in saline soils. Modifications of these methods are recommended.In the argentometric titration, the writer recommends the use of fluorescein as an adsorption indicator which gives a better color contrast of yellowish green fluorescence to pink. In addition, this method is comparatively simple and inexpensive.In the bromatometric method instead of the sintered glass filter an ordinary retentive, quantitative filter paper has been found adoptable in filtering the K-TPB precipitate. The bromatometric method, though comoarativelv tedious. gives a higher degree of accuracy and precision than the argentometric method.